I got a new laptop and I am trying to decide whether I should migrate my old macbook onto the new one or just set it up as a new mac and transfer over some files I need often but I have a few questions here: 1) my old mac is very old and lethargic which is most likely related to hardware but wondering if I do migrate this old mac onto the new one and if there are any corrupt files or issues on the old one causing issues would it transfer over to my new mac and in turn cause problems as well? or the migrate is just select items? My understanding is the back up I create is so if my HD crashes I have everything in "AS IS" on the back up therefore everything will transfer over to the new one including issues correct? Kind of like restoring an iPhone or iPad where all the settings and apps etc transfer over. 2) If i only transfer items I use without migrating my old mac, how can I get my saved back ups of my iPhone on iTunes onto the new mac? Or that isn't possible unless I do the migrate? I am just thinking if some of the lagging and slowness/issues of my old computer is file related and I migrate my mac over to the new one it may transfer that issue onto the new one and I definitely don't want that but I am not entirely sure whether that is even possible or not? I remember with windows back in the day and most likely still now if you transfer over a corrupt file it would affect your entire system. Not sure if OS X operates like that as well.